PANI/GO and Sm co-modified Ti/PbO2 dimensionally stable anode for highly efficient amoxicillin degradation: Performance assessment, impact parameters and degradation mechanism

被引：2

作者：

Wang, Zeyi ^{[1
]}

Zhang, Luyao ^{[1
]}

Su, Rong ^{[1
,2
]}

Yang, Lu ^{[1
]}

Xiao, Feng ^{[1
]}

Chen, Lichuan ^{[1
]}

He, Ping ^{[1
,3
]}

Yang, Dingming ^{[1
]}

Zeng, Yali ^{[4
]}

Zhou, Yun ^{[4
]}

Wan, Ying ^{[5
]}

Tang, Bin ^{[5
]}

机构：

[1] Southwest Univ Sci & Technol, Sch Mat & Chem, Mianyang 621010, Peoples R China

[2] Xichang Univ, Sch Sci, Xichang 615000, Peoples R China

[3] Southwest Univ Sci & Technol, Int Sci & Technol Cooperat Lab Micronanoparticle A, Mianyang 621010, Peoples R China

[4] Sichuan Mianyang 404 Hosp, Mianyang 621000, Peoples R China

[5] Southwest Med Univ, Sch Basic Med Sci, Luzhou 646000, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2024年 / 364卷

基金：

中国国家自然科学基金;

关键词：

Electrochemical oxidation; Amoxicillin; Ti/PbO 2-PANI/GO-Sm electrode; Degradation mechanism; Wastewater treatment; ELECTROCHEMICAL DEGRADATION; ELECTROCATALYTIC DEGRADATION; ELECTRODE; COMPOSITE; NANOCOMPOSITES; OXIDATION; FILM;

D O I：

10.1016/j.jenvman.2024.121435

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The abuse and uncontrolled discharge of antibiotics present a severe threat to environment and human health, necessitating the development of efficient and sustainable treatment technology. In this work, we employ a facile one-step electrodeposition method to prepare polyaniline/graphite oxide (PANI/GO) and samarium (Sm) comodified Ti/PbO2 (Ti/PbO2-PANI/GO-Sm) electrode for the degradation of amoxicillin (AMX). Compared with traditional Ti/PbO2 electrode, Ti/PbO2-PANI/GO-Sm electrode exhibits more excellent oxygen evolution potential (2.63 V) and longer service life (56 h). In degradation experiment, under optimized conditions (50 mg L-1 AMX, 20 mA cm-2, pH 3, 0.050 M Na2SO4, 25 degrees C), Ti/PbO2-PANI/GO-Sm electrode achieves remarkable removal efficiencies of 88.76% for AMX and 79.92% for chemical oxygen demand at 90 min. In addition, trapping experiment confirms that center dot OH plays a major role in the degradation process. Based on theoretical calculation and liquid chromatography-mass spectrometer results, the heterocyclic portion of AMX molecule is more susceptible to center dot OH attacks. Thus, this novel electrode offers a sustainable and efficient solution to address environmental challenges posed by antibiotic-contaminated wastewater.

引用

页数：14

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